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Epidemiological documents show an association of tobacco smoking rates and perceived stress levels. This study, using an animal model of nicotine self-administration, investigated effects of stress on nicotine-taking behavior. Sprague-Dawley rats were trained to intravenously self-administer nicotine. Thirty minutes before test sessions, animals were challenged with an intraperitoneal administration of a pharmacological stressor yohimbine. In the low nicotine-taking rats, yohimbine challengedoi:10.33425/2639-8451.1023 fatcat:hrnkjn65rbhbzghakxtoz6hfzm